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@article{DAN_1973_210_2_a5, author = {R. A. Raitsin}, title = {On the best approximation of a class of functions by algebraic polynomials}, journal = {Doklady Akademii Nauk}, pages = {274--277}, publisher = {mathdoc}, volume = {210}, number = {2}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_2_a5/} }
R. A. Raitsin. On the best approximation of a class of functions by algebraic polynomials. Doklady Akademii Nauk, Tome 210 (1973) no. 2, pp. 274-277. http://geodesic.mathdoc.fr/item/DAN_1973_210_2_a5/